Plenty of people with significant equity in their home still have negative cash positions for most of their lives regardless of the amount of money they save. On the other hand people that short stock can have significant cash holdings without saving anything.
To the extent that home has intrinsic value, the homeowner is saving. To the extent it gains value against the dollar it transfers wealth from non-homeowners. In fact this is the express goal of the current Fed policy.
Plenty of people with significant equity in their home still have negative cash positions for most of their lives regardless of the amount of money they save. On the other hand people that short stock can have significant cash holdings without saving anything.